340 on pump gas

you need better heads, w-2 or edelbrock and them worked with a mid size solid and a good convertor 3500 or better, with a air gap or victor intake, and that will do it my combo 340 bored 30 srp, 540 549 solid hughes fully worked edies , victor 340, 1.6 rr, 4200 stall 410 gear 750 aed, low mid 7,s and mid 11's all day it a full weight street car, dynoed 386 at the wheels, hope this helps:D